CN103761949B - Gate driver circuit and driving method - Google Patents
Gate driver circuit and driving method Download PDFInfo
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- CN103761949B CN103761949B CN201310750809.1A CN201310750809A CN103761949B CN 103761949 B CN103761949 B CN 103761949B CN 201310750809 A CN201310750809 A CN 201310750809A CN 103761949 B CN103761949 B CN 103761949B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0408—Integration of the drivers onto the display substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/061—Details of flat display driving waveforms for resetting or blanking
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0219—Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Shift Register Type Memory (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
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Abstract
The invention discloses a kind of gate driver circuit and driving method, this circuit comprises multistage GOA circuit, the N level GOA circuit of this multistage GOA circuit comprises: charhing unit, and it carries out precharge to obtain a voltage according to N-1 article of gate line signal to energy-storage units; Driver element, it is according to the supreme pull-up voltage of signal of voltage and clock pulse signal pull-up N article of gate line; First reset unit, the signal of N article of gate line is reset to the first resetting voltage or the 3rd resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage by it; Second reset unit, N article of gate line is reset to the second resetting voltage according to the signal of N+3 article of gate line and the second resetting voltage by it.The circuit that the present invention proposes realizes pixel cell quadravalence by two reset units and drives, and effectively can solve the impact of feed-trough voltage on pixel electrode, improve image quality effect.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of gate driver circuit and driving method.
Background technology
In recent years, along with the display trend of slimming, liquid crystal display (LiquidCrystalDisplay, LCD) has been widely used in the application of various electronic product, such as mobile phone, notebook and colour television set etc.
Array base palte raster data model (GateDriveronArray, GOA) technology is directly produced on array base palte by gate driver circuit (GateDriverICs), replaces by a kind of technology of external silicon wafer fabrication.Gate driver circuit can directly be made in around panel by the application of this technology, thus decreases production process, and reduces cost of products.In addition, also improve the high integration of TFT-LCD panel, make panel more slimming.
When plate drives over there, feedthrough (feedthrough) voltage causing show electrode (also claiming pixel electrode) to change by capacitive coupling can be produced.What have the greatest impact is gate drive voltage change, namely via the feed-trough voltage that stray capacitance Cgd produces.Therefore the method by compensating common electric voltage can reduce the impact of feed-trough voltage, but due to liquid crystal capacitance Clc be not a fixing parameter, therefore not easily realized to improve image quality object by adjustment common electric voltage.
Traditional second order drives GOA circuit to be in the nature a 4T1C(tetra-TFT switches, an electric capacity) circuit.Be illustrated in figure 1 the GOA circuit theory diagrams that two traditional rank drive 4T1C, wherein, TFT1 is driving transistors, is mainly used in controlling grid line noble potential and exports.TFT2 and TFT3 is reset transistor, and Main Function is dragged down by grid line current potential, discharges the electric charge of holding capacitor Cb simultaneously, makes TFT1 be in closed condition.TFT4 is input (or precharge) transistor, and Main Function is to holding capacitor Cb preliminary filling, is opened by TFT1.Electric capacity Cb Main Function is stored charge, keep TFT1 grid potential, its input signal is the grid line output signal g ate [N-1] of lastrow, TFT1 output signal is current line grid line output signal g ate [N], and reset signal is next line grid line output signal g ate [N+1].TFT1 input end is clock signal Vck.Concrete driver' s timing as shown in Figure 2.
Second order driving is completed by above-mentioned GOA circuit is carried out following action as GOA unit.Namely the output of last GOA unit is as the trigger pip of this GOA unit, and the output of next GOA unit is as the reset signal of this GOA unit.Clock signal adopts two (Vclk_A, Vclk_B), is respectively used to the GOA unit of odd-numbered line and the GOA unit of even number line.Grid line output potential Vss determines the height or perhaps the amplitude that grid line export pulse.
But foregoing circuit does not solve the impact of the image effect that feed-trough voltage brings.Therefore, how solving the problem, provide a kind of drive scheme to affect the display effect of image quality effectively to reduce feed-trough voltage, is one of problem of endeavouring of industry.
Summary of the invention
One of technical matters to be solved by this invention needs to provide a kind of gate driver circuit, and it effectively can reduce the impact of feed-trough voltage on the display effect of image quality.In addition, a kind of driving method of gate driver circuit is additionally provided.
1) in order to solve the problems of the technologies described above, the invention provides a kind of gate driver circuit, comprise multistage GOA circuit, a N level GOA circuit of this multistage GOA circuit comprises: an energy-storage units; One charhing unit, be electrically connected between a N-1 article gate line and described energy-storage units, it carries out precharge to obtain a voltage according to N-1 article of gate line signal to described energy-storage units; One driver element, is electrically connected on a clock output line and a N article gate line, pull-up voltage on the signal to of its N article of gate line according to described voltage and a clock pulse signal pull-up; One first reset unit, be electrically connected between described energy-storage units and one first resetting voltage or the 3rd resetting voltage, the signal of described N article of gate line is reset to the first resetting voltage or the 3rd resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage by it; One second reset unit, be electrically connected between a N article gate line and one second resetting voltage, described N article of gate line is reset to the second resetting voltage according to the signal of N+3 article of gate line and the second resetting voltage by it.
2) the of the present invention 1st) in a preferred implementation of item, when the gate line that described N level GOA circuit connects is negative polarity, the signal of described N article of gate line is reset to the first resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage by described first reset unit, and described first resetting voltage and described second resetting voltage have a negative electricity pressure reduction.
3) the of the present invention 1st) item or the 2nd) in a preferred implementation in item, when the gate line that described N level GOA circuit connects is positive polarity, the signal of described N article of gate line is reset to the 3rd resetting voltage according to the signal of N+1 article of gate line and the 3rd resetting voltage by described first reset unit, and described 3rd resetting voltage and described second resetting voltage have a positive electricity pressure reduction.
4) the of the present invention 1st) Xiang Zhi 3) in any one preferred implementation in item, described second reset unit is a transistor, it has a grid, one first source/drain and one second source/drain, the described N+3 article of gate line of this grid electrical connection, this first source/drain and this second source/drain are electrically connected described N article of gate line and the second resetting voltage respectively.
5) the of the present invention 1st) Xiang Zhi 4) in any one preferred implementation in item, described first reset unit comprises a first transistor and a transistor seconds, have a grid, one first source/drain and one second source/drain respectively, described the first transistor is jointly electrically connected with the grid of described transistor seconds and is connected with described N+1 article of gate line; First source/drain of described the first transistor is electrically connected with the first end of described energy-storage units, and the first source/drain of described transistor seconds is electrically connected with the second end of described energy-storage units; Second source/drain of described the first transistor and transistor seconds is jointly electrically connected and is electrically connected with described first resetting voltage or the 3rd resetting voltage.
6) the of the present invention 1st) Xiang Zhi 5) in any one preferred implementation in item, described charhing unit is a transistor, it has a grid, one first source/drain and one second source/drain, the grid of described charhing unit and the described N-1 article of gate line of the first source/drain electrical connection, its second source/drain connects the first end being electrically connected described energy-storage units.
7) the of the present invention 1st) Xiang Zhi 6) in any one preferred implementation in item, described driver element is a transistor, it has a grid, one first source/drain and one second source/drain, first source/drain of described driver element is electrically connected described clock output line, the first end of its grid electrical connection energy-storage units, its second source/drain is electrically connected the second end of N article of gate line and described energy-storage units.
8) according to a further aspect in the invention, additionally provide a kind of driving method using as above any one gate driver circuit, comprising: charhing unit receives N-1 article of gate line signal and carries out precharge to obtain a voltage to energy-storage units; Driver element receives a clock pulse signal, and according to described voltage and this clock pulse signal pull-up N article of gate line signal on pull-up voltage; First reset unit receives the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage, and the signal of described N article of gate line is reset to the first resetting voltage or the 3rd resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage; Second reset unit receives signal and second resetting voltage of N+3 article of gate line, and according to the signal of N+3 article of gate line and the second resetting voltage, described N article of gate line is reset to the second resetting voltage.
9) the of the present invention 8th) in a preferred implementation of item, when the gate line that described N level GOA circuit connects is negative polarity, described first reset unit receives the first resetting voltage, and the signal of described N article of gate line being reset to the first resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage, described first resetting voltage and described second resetting voltage have a negative electricity pressure reduction.
10) the of the present invention 8th) item or the 9th) in a preferred implementation in item, when the gate line that described N level GOA circuit connects is positive polarity, described first reset unit receives the 3rd resetting voltage, and the signal of described N article of gate line being reset to the 3rd resetting voltage according to the signal of N+1 article of gate line and the 3rd resetting voltage, described 3rd resetting voltage and described second resetting voltage have a positive electricity pressure reduction.
Compared with prior art, one or more embodiment of the present invention can have the following advantages by tool:
The present invention proposes a kind of quadravalence and drive GOA circuit, this circuit is by two reset signals, for the gate line of negative polarity, gate output signal is pulled low to reset signal Vss1 and reset signal Vss2, for the gate line of positive polarity, gate output signal is pulled low to reset signal Vss3 and reset signal Vss2, and then realizes the driving of pixel cell quadravalence.Further, this driving circuit can solve the insurmountable feed-trough voltage of second order driving circuit effectively on the impact of pixel electrode, and then improves image quality effect.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, with embodiments of the invention jointly for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the GOA circuit diagram that in prior art, second order drives;
Fig. 2 is the sequential chart that in prior art, second order drives GOA circuit to export;
Fig. 3 is the GOA circuit diagram of quadravalence driving according to an embodiment of the invention;
Fig. 4 is the sequential chart of the GOA circuit output that quadravalence according to the present invention drives;
Fig. 5 is the voltage waveform view of the raster data model that quadravalence drives;
Fig. 6 is the voltage waveform view of the positive polarity show electrode that quadravalence drives;
Fig. 7 is the voltage waveform view of the negative polarity show electrode that quadravalence drives.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
It should be noted that, the driving circuit of the present embodiment belongs to quadravalence driving circuit.Feed-trough voltage when not changing common electric voltage, can be returned to compensation by it.The quadravalence driving circuit of the present embodiment utilizes the feed-trough voltage via memory capacitance Cs, compensates the feed-trough voltage produced via stray capacitance Cgd.
Fig. 3 is the GOA circuit diagram of quadravalence driving according to an embodiment of the invention.For convenience of describing, only depict a N level GOA circuit of multistage GOA circuit.As shown in Figure 3, comprising: an energy-storage units Cb, a charhing unit 31, be electrically connected between a N-1 article gate line and energy-storage units Cb, it carries out precharge to obtain a voltage according to N-1 article of gate line signal to energy-storage units Cb.One driver element 32, is electrically connected on a clock output line and a N article gate line, and it is according to pull-up voltage on the signal to of voltage and clock pulse signal pull-up N article of gate line.One first reset unit 33, be electrically connected between energy-storage units Cb and one first resetting voltage Vss1 or the 3rd resetting voltage Vss3, the signal of N article of gate line is reset to the first resetting voltage Vss1 or the 3rd resetting voltage Vss3 according to the signal of N+1 article of gate line and the first resetting voltage Vss1 or the 3rd resetting voltage Vss3 by it.One second reset unit 34, be electrically connected between a N article gate line and one second resetting voltage Vss2, N article of gate line is reset to the second resetting voltage Vss2 according to the signal of N+3 article of gate line and the second resetting voltage Vss2 by it.
It should be noted that, when the gate line that N level GOA circuit connects is negative polarity, the signal of N article of gate line is reset to the first resetting voltage Vss1 according to the signal of N+1 article of gate line and the first resetting voltage Vss1 by the first reset unit 33, and this first resetting voltage Vss1 and the second resetting voltage Vss1 has a negative electricity pressure reduction (as shown in aftermentioned Fig. 5 V
e (-)).And when the gate line that N level GOA circuit connects is positive polarity, the signal of N article of gate line is reset to the 3rd resetting voltage Vss3 according to the signal of N+1 article of gate line and the 3rd resetting voltage Vss3 by the first reset unit 33, and the 3rd resetting voltage Vss3 and the second resetting voltage Vss2 has a positive electricity pressure reduction (as shown in aftermentioned Fig. 5 V
e (+)).
As shown in Figure 3, this GOA circuit essence is that a 5T4C circuit comprises: transistor TFT1(is as driver element 32), transistor TFT2 and TFT3(form the first reset unit 33 jointly), transistor TFT4(is as charhing unit 31) and transistor TFT5(as the second reset unit 34) these five transistor switches and a holding capacitor Cb(be as energy-storage units).Further, the stray capacitance Cgd between TFT1 grid and drain electrode is also schematically delineated.
The input signal of this circuit comprises clock signal (positive polarity or negative polarity clock signal) Vck, the output Output [N-1] of the capable grid line of N-1, the output Output [N+1] of the capable grid line of N+1, output Output [N+3], the first reset signal Vss1 of the capable grid line of N+3 or the 3rd reset signal Vss3, and the second reset signal Vss2.
Wherein, driving transistors TFT1 has a grid, one first source/drain and one second source/drain, its first source/drain electrical connection clock output line Vck, the first end of its grid electrical connection electric capacity Cb, its second source/drain is electrically connected second end of N article of gate line and electric capacity Cb.Be mainly used in controlling grid line noble potential to export.
TFT2, TFT3 and TFT5 are reset transistor, are mainly used in grid line current potential to drag down, and are discharged by holding capacitor Cb electric charge simultaneously, make TFT1 be in closed condition.
The grid of TFT2 with TFT3 is jointly electrically connected and is connected with N+1 article of gate line, first source/drain of TFT2 is electrically connected with the first end of electric capacity Cb, first source/drain of TFT3 is electrically connected with second end of electric capacity Cb, and second source/drain of TFT2 and TFT3 is jointly electrically connected and is electrically connected with the first resetting voltage Vss1 or the 3rd resetting voltage Vss3.Realize because pixel voltage quadravalence drives by the difference change of the capable grid potential of both positive and negative polarity, therefore for the capable output of negative pole, grid line input is reset to Vss1 current potential by TFT2, and for the capable output of positive pole, grid line input is reset to Vss3 current potential by TFT2.
Wherein, grid exports and resets to Vss2 current potential by TFT5, and it is driven by output signal g ate [N+3].TFT5 has a grid, one first source/drain and one second source/drain, and this grid is electrically connected N+3 article of gate line, and this first source/drain and this second source/drain are electrically connected N article of gate line and the second resetting voltage Vss2 respectively.
TFT4 is input (or precharge) transistor, and Main Function is to holding capacitor Cb preliminary filling, is opened by TFT1.It has a grid, one first source/drain and one second source/drain, and grid and the first source/drain are electrically connected N-1 article of gate line, and its second source/drain connects the first end of electrical connection electric capacity Cb.
Concrete driver' s timing as shown in Figure 4.Adopt two cycle identical, opposite polarity clock sequences (ClkA, ClkB).They are used on GOA circuit corresponding on GOA circuit corresponding on odd-numbered line grid line and even number line grid line respectively.
For corresponding odd-numbered line grid line Gate1(negative polarity) on GOA circuit, illustrate how to realize quadravalence drive.
First, TFT4 receives the driving voltage of a grid line, carries out preliminary filling, opened by TFT1 holding capacitor Cb.
TFT1 exports grid line noble potential Vgh.TFT2 and TFT3 receives the driving voltage of next grid line, is dragged down by grid line current potential, is discharged by holding capacitor Cb electric charge simultaneously, makes TFT1 be in closed condition.
Owing to exporting for strange row, grid line input is resetted (dragging down) to Vss1 current potential by TFT2.Finally, TFT5 is driven by N+3 article of grid line, resets to Vss2 current potential, complete the driving of Gate1 as shown in Figure 4 to be exported by grid.
In order to understand the present invention further, lower mask body is described timing waveform.Fig. 5 is the oscillogram of quadravalence driving grid driving voltage.As can be seen from the oscillogram that this quadravalence drives, among the gate drive voltage waveform that this quadravalence drives, the voltage of both positive and negative polarity always has 4 kinds: open voltage Vgh, closedown voltage Vss2 that pressure reduction is Vg, voltage Vss2 is high (exists pressure reduction V than closing
e(+)) voltage Vss3 and than closing, voltage Vss2 is lower (exists pressure reduction V
e(-)) voltage Vss1.
The raster data model cabling voltage being responsible for positive polarity and negative polarity is different, as shown in Figure 6, is the voltage oscillogram of positive polarity show electrode.Wherein, 61 represent N-1 article of gate drive voltage, and 62 represent common electric voltage, and 64 represent N article of gate drive voltage.
As can be seen from figure, we, after show electrode voltage 63 is charged by source drive, understand again through the change in voltage (in as figure shown in dotted line circle) of three times.Via the feed-trough voltage 631 of stray capacitance Cgd when being first current N article of raster data model cabling closedown, next is the feed-trough voltage 632 via memory capacitance Cs when being retracted by last article of (N-1) raster data model cabling voltage, and this voltage is most important voltage show electrode voltage 63 being raised positive polarity voltage scope.And last, be then current N article of raster data model cabling voltage drop-down time the feed-trough voltage 633 that produces via stray capacitance Cgd, this voltage is owing to being the relation via stray capacitance Cgd, and the amplitude of change is also little, so impact is also smaller.
As shown in Figure 7, it is the voltage oscillogram of negative polarity show electrode.Wherein 71 represent N-1 article of gate drive voltage, and 72 represent common electric voltage, and 74 represent N article of gate drive voltage.
As can be seen from Figure 7, after show electrode voltage 73 is charged by source drive, can again through the change in voltage of three times.The feed-trough voltage 731 produced via stray capacitance Cgd when being first current N article of raster data model cabling voltage closedown affects, and the relation of closing due to voltage then can show electrode voltage 73 toward drop-down.Next be upper one article of (N-1) raster data model cabling drop-down time through the feed-trough voltage 732 of memory capacitance Cs, the impact of this voltage is very important, because it is principal ingredient Voltage Cortrol being become reverse voltage, must can by the Voltage Cortrol of entirety to required level.Finally the impact via the feed-trough voltage 733 of stray capacitance Cgd when retracting of current N article of raster data model cabling voltage, because the amplitude retracting voltage is smaller, so the impact of entirety is also fewer.
Because the feed-trough voltage be subject to through stray capacitance Cgd affects, if the voltage range of positive-negative polarity will be separated, for the voltage range of positive polarity, the voltage up promoted can be larger, and the voltage that it up promotes is feed-trough voltage from a upper raster data model cabling voltage toward pull-up via memory capacitance Cs is formed.Because the voltage compare needed for it is large, institute above raster data model cabling retract time voltage also can be larger.And the formation of display voltage range for negative polarity, be also utilize the change in voltage of a raster data model cabling.Show electrode voltage with positive polarity is different, and it is it is desirable that drop-down feed-trough voltage, to form negative show electrode voltage range.Actuation voltage required for it follows the pull-up voltage compare of positive polarity to get up can be smaller.Drive by carrying out above-mentioned quadravalence to the voltage of raster data model cabling, the impact of feed-trough voltage pixel electrode can be reduced.
In sum, the quadravalence that the present invention proposes a kind of 5T1C drives GOA circuit, this circuit is by two reset signals, by gate output signal, reset signal Vss1 and reset signal Vss2 is pulled low to respectively to odd-numbered line, gate output signal is pulled low to reset signal Vss3 and reset signal Vss2 by even number line respectively, and then realizes the driving of pixel cell quadravalence.Further, this driving circuit can solve the insurmountable feed-trough voltage of second order driving circuit effectively on the impact of pixel electrode, and then improves image quality effect.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, any those skilled in the art are in the technical scope disclosed by the present invention; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a gate driver circuit, comprises multistage GOA circuit, and a N level GOA circuit of this multistage GOA circuit comprises:
One energy-storage units;
One charhing unit, be electrically connected between a N-1 article gate line and described energy-storage units, it carries out precharge to obtain a voltage according to N-1 article of gate line signal to described energy-storage units;
One driver element, is electrically connected on a clock output line and a N article gate line, pull-up voltage on the signal to of its N article of gate line according to described voltage and a clock pulse signal pull-up;
One first reset unit, be electrically connected between described energy-storage units and one first resetting voltage or the 3rd resetting voltage, the signal of described N article of gate line is reset to the first resetting voltage or the 3rd resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage by it;
One second reset unit, be electrically connected between a N article gate line and one second resetting voltage, described N article of gate line is reset to the second resetting voltage according to the signal of N+3 article of gate line and the second resetting voltage by it,
When the gate line that described N level GOA circuit connects is negative polarity, the signal of described N article of gate line is reset to the first resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage by described first reset unit, and described first resetting voltage and described second resetting voltage have a negative electricity pressure reduction;
When the gate line that described N level GOA circuit connects is positive polarity, the signal of described N article of gate line is reset to the 3rd resetting voltage according to the signal of N+1 article of gate line and the 3rd resetting voltage by described first reset unit, and described 3rd resetting voltage and described second resetting voltage have a positive electricity pressure reduction.
2. gate driver circuit according to claim 1, is characterized in that,
Described second reset unit is a transistor, it has a grid, one first source/drain and one second source/drain, the described N+3 article of gate line of this grid electrical connection, this first source/drain and this second source/drain are electrically connected described N article of gate line and the second resetting voltage respectively.
3. gate driver circuit according to claim 2, is characterized in that,
Described first reset unit comprises a first transistor and a transistor seconds, has a grid, one first source/drain and one second source/drain respectively,
Described the first transistor is jointly electrically connected with the grid of described transistor seconds and is connected with described N+1 article of gate line;
First source/drain of described the first transistor is electrically connected with the first end of described energy-storage units, and the first source/drain of described transistor seconds is electrically connected with the second end of described energy-storage units;
Second source/drain of described the first transistor and transistor seconds is jointly electrically connected and is electrically connected with described first resetting voltage or the 3rd resetting voltage.
4. gate driver circuit according to claim 3, is characterized in that, described charhing unit is a transistor, and it has a grid, one first source/drain and one second source/drain,
The grid of described charhing unit and the described N-1 article of gate line of the first source/drain electrical connection, its second source/drain connects the first end being electrically connected described energy-storage units.
5. gate driver circuit according to claim 4, is characterized in that, described driver element is a transistor, and it has a grid, one first source/drain and one second source/drain,
First source/drain of described driver element is electrically connected described clock output line, and the first end of its grid electrical connection energy-storage units, its second source/drain is electrically connected the second end of N article of gate line and described energy-storage units.
6. use a driving method for the gate driver circuit according to any one of claim 1-5, comprising:
Charhing unit receives N-1 article of gate line signal and carries out precharge to obtain a voltage to energy-storage units;
Driver element receives a clock pulse signal, and according to described voltage and this clock pulse signal pull-up N article of gate line signal on pull-up voltage;
First reset unit receives the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage, and the signal of described N article of gate line is reset to the first resetting voltage or the 3rd resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage or the 3rd resetting voltage;
Second reset unit receives signal and second resetting voltage of N+3 article of gate line, and described N article of gate line is reset to the second resetting voltage according to the signal of N+3 article of gate line and the second resetting voltage,
When the gate line that described N level GOA circuit connects is negative polarity, described first reset unit receives the first resetting voltage, and the signal of described N article of gate line being reset to the first resetting voltage according to the signal of N+1 article of gate line and the first resetting voltage, described first resetting voltage and described second resetting voltage have a negative electricity pressure reduction;
When the gate line that described N level GOA circuit connects is positive polarity, described first reset unit receives the 3rd resetting voltage, and the signal of described N article of gate line being reset to the 3rd resetting voltage according to the signal of N+1 article of gate line and the 3rd resetting voltage, described 3rd resetting voltage and described second resetting voltage have a positive electricity pressure reduction.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750809.1A CN103761949B (en) | 2013-12-31 | 2013-12-31 | Gate driver circuit and driving method |
| GB1610389.7A GB2536160B (en) | 2013-12-31 | 2014-01-24 | Gate driver circuit and driving method |
| JP2016542182A JP6231692B2 (en) | 2013-12-31 | 2014-01-24 | Gate drive circuit and drive method |
| PCT/CN2014/071390 WO2015100828A1 (en) | 2013-12-31 | 2014-01-24 | Gate driver circuit and driving method |
| US14/241,804 US10032424B2 (en) | 2013-12-31 | 2014-01-24 | Gate driving circuit and driving method |
| EA201691315A EA032171B1 (en) | 2013-12-31 | 2014-01-24 | Gate driving circuit and driving method |
| KR1020167016566A KR101906943B1 (en) | 2013-12-31 | 2014-01-24 | Gate driver circuit and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750809.1A CN103761949B (en) | 2013-12-31 | 2013-12-31 | Gate driver circuit and driving method |
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| Publication Number | Publication Date |
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| CN103761949A CN103761949A (en) | 2014-04-30 |
| CN103761949B true CN103761949B (en) | 2016-02-24 |
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| CN201310750809.1A Active CN103761949B (en) | 2013-12-31 | 2013-12-31 | Gate driver circuit and driving method |
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| US (1) | US10032424B2 (en) |
| JP (1) | JP6231692B2 (en) |
| KR (1) | KR101906943B1 (en) |
| CN (1) | CN103761949B (en) |
| EA (1) | EA032171B1 (en) |
| GB (1) | GB2536160B (en) |
| WO (1) | WO2015100828A1 (en) |
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| US8232947B2 (en) | 2008-11-14 | 2012-07-31 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
| CN103474040B (en) * | 2013-09-06 | 2015-06-24 | 合肥京东方光电科技有限公司 | Grid electrode drive unit, grid electrode drive circuit and display device |
| TWI533271B (en) * | 2014-05-23 | 2016-05-11 | 友達光電股份有限公司 | Driving method of display panel |
| CN105116276B (en) * | 2015-09-15 | 2019-03-01 | 深圳市华星光电技术有限公司 | A kind of detection device of capacitance plate |
| CN105185339B (en) * | 2015-10-08 | 2017-12-29 | 京东方科技集团股份有限公司 | Shift register cell, grid line drive device and driving method |
| CN105702194B (en) * | 2016-04-26 | 2019-05-10 | 京东方科技集团股份有限公司 | A kind of shift register cell, gate driving circuit and its driving method |
| CN106448600B (en) * | 2016-10-26 | 2018-05-18 | 京东方科技集团股份有限公司 | Shift register and its driving method |
| CN107481659B (en) * | 2017-10-16 | 2020-02-11 | 京东方科技集团股份有限公司 | Gate drive circuit, shift register and drive control method thereof |
| CN108257568B (en) * | 2018-02-01 | 2020-06-12 | 京东方科技集团股份有限公司 | Shift register, grid integrated drive circuit, display panel and display device |
| CN108399902A (en) * | 2018-03-27 | 2018-08-14 | 京东方科技集团股份有限公司 | Shift register, gate driving circuit and display device |
| CN109686330A (en) * | 2019-01-22 | 2019-04-26 | 深圳市华星光电半导体显示技术有限公司 | A kind of pixel-driving circuit and its driving method |
| CN110349536B (en) * | 2019-04-08 | 2021-02-23 | 深圳市华星光电半导体显示技术有限公司 | GOA circuit and display panel |
| CN111243543B (en) * | 2020-03-05 | 2021-07-23 | 苏州华星光电技术有限公司 | GOA circuit, TFT substrate, display device and electronic equipment |
| KR20220115707A (en) * | 2021-02-09 | 2022-08-18 | 삼성디스플레이 주식회사 | Electronic module and electronic module testing method |
| CN116168660B (en) * | 2023-04-26 | 2023-08-08 | 惠科股份有限公司 | Driving circuit of display panel, display device and driving method |
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- 2014-01-24 KR KR1020167016566A patent/KR101906943B1/en active IP Right Grant
- 2014-01-24 US US14/241,804 patent/US10032424B2/en active Active
- 2014-01-24 JP JP2016542182A patent/JP6231692B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| US20150206495A1 (en) | 2015-07-23 |
| EA201691315A1 (en) | 2017-01-30 |
| US10032424B2 (en) | 2018-07-24 |
| GB201610389D0 (en) | 2016-07-27 |
| GB2536160B (en) | 2020-11-25 |
| CN103761949A (en) | 2014-04-30 |
| JP2017510829A (en) | 2017-04-13 |
| WO2015100828A1 (en) | 2015-07-09 |
| EA032171B1 (en) | 2019-04-30 |
| KR20160087893A (en) | 2016-07-22 |
| GB2536160A (en) | 2016-09-07 |
| JP6231692B2 (en) | 2017-11-15 |
| KR101906943B1 (en) | 2018-10-11 |
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